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markkzz8

Tomas Listiak

@markkzz8

Full Stack SaaS Developer, React, Node js, Python, AI FinTech

Germany
German, English, Italian, Spanish, French
About me
Call me Tomas, a full-stack developer with 11+ years of experience building scalable SaaS, FinTech, eCommerce, and AI-powered web applications for startups and growing businesses. I specialize in React, Node.js, Python, REST APIs, Stripe, OpenAI ChatGPT API, real-time analytics dashboards, admin panels, secure authentication, payment integrations, and AWS cloud deployment. My niche is transforming business ideas into reliable B2B/B2C platforms, startup MVPs, AI chatbots, and data-driven web apps with clean architecture, responsive interfaces, secure APIs, and scalable infrastructure.... Read more

Skills

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markkzz8
Tomas Listiak
Offline • 
Average response time: 1 hour

See my services

Full Stack Web Applications
I will develop startup admin dashboard with react real time analytics metrics and kpis
From$120 / projectMore details
Full Stack Web Applications
I will build b2b b2c b2g ecommerce platform with react stripe payment with admin panel
From$150 / projectMore details

Work experience

Jumia

eCommerce Full-Stack Developer

Jumia • Full-time

Mar 2026 - Present • 4 mos

Built B2B and B2C eCommerce platforms using React and Node.js with Stripe payment integration, product catalogs, customer accounts, checkout systems, order management, and custom admin panels. Developed secure APIs and responsive interfaces designed for scalable online commerce and seamless customer experiences. Skills: React, Node.js, Stripe, eCommerce, APIs, JavaScript

TechOn_Ventures

Full-Stack FinTech SaaS Developer

TechOn Ventures • Freelance

Jun 2026 - Jul 2026 • 1 mo

Developed secure FinTech SaaS applications using React, Node.js, Python, PostgreSQL, AWS, and payment APIs. Built authentication systems, financial dashboards, payment workflows, REST APIs, admin panels, and scalable cloud infrastructure. Integrated third-party payment services and implemented secure API communication, database architecture, testing, and deployment workflows. Skills: React, Node.js, Python, AWS, PostgreSQL, REST API, FinTech

Yoplait

SaaS & Dashboard Developer

Yoplait • Full-time

May 2026 - Jul 2026 • 2 mos

Designed and developed responsive startup admin dashboards with React and Node.js, including real-time analytics, KPIs, metrics, user management, reporting, and role-based access. Created reusable components and REST APIs while improving application performance, usability, and scalability for B2B SaaS products. Skills: React, Node.js, JavaScript, REST API, Analytics, SaaS